Apparatus for controlling the feed of an intermittent web-feeding apparatus

Abstract

The driving gear meshes with the gear on the web of a planetary gear. This planetary gear includes an arrestable sun wheel. The output sun wheel is rigidly connected to the drive shaft. It extends through a sleeve section of the web. A longitudinally displaceable shifting sleeve is located on the sleeve section, which shifting sleeve has a plurality of control disks. These control disks control via a roller the rocking movement of the upper feeding roller. Accordingly, the period of the rocking movement can be selected depending on a respective selected control disk. If the sun wheel is unlocked, the shifting sleeve may be moved such that it engages directly the drive shaft such that by properly selecting the number of teeth it is possible to choose between a rotational speed transmission relation of 1:2 and 1:1.

I claim: 
     
       1. In an apparatus for controlling the feed of a feeding apparatus for intermittently feeding a web-shaped workpiece, the apparatus having a rotationally driven web with a sleeve section, a planetary gear having planet gears pinioned on the web and sun wheels, a drive shaft rotatably supported in the sleeve section of the web and coupled for rotation with one of the sun wheels, feeding means having a pressing and feeding roller rotated by the rotation of the drive shaft and rockable for intermittently feeding the web-shaped workpiece when rocked into engagement therewith, holding means having a pressing bar rockable into intermittent engagement with the web-shaped workpiece for holding it, and rocking means operated by the rotation of the drive shaft for rocking the feeding and holding means, the improvement of the rocking means, comprising: a plurality of control disks on a shifting sleeve arranged rotationally fixed but axially displaceable on the sleeve section of the web and a further control disk fixedly mounted to the sleeve section of the web to control the rocking means for the feeding and holding means.   
     
     
       2. The apparatus of claim 1; wherein the plurality of control disks control the rocking means for the feeding means and the further control disk controls the rocking means for the holding means.   
     
     
       3. The apparatus of claim 2; wherein the plurality of control disks are axially spaced along the shifting sleeve and the rocking means for the feeding means is controlled by one of the plurality of control disks at a time; and   further comprising slide bar means for axially displacing the shifting sleeve on the sleeve section for selecting the one of the plurality of control disks that controls the rocking means for the feeding means at that time.   
     
     
       4. The apparatus of claim 3; wherein another of the sun wheels is connected to an arresting disk for rotation together; and   wherein the slide bar means has a front end for engaging and arresting rotation of the arresting disk only when the slide bar has axially displaced the shifting sleeve for control of the rocking means by a first one of the plurality of control disks,   whereby to change the ratio of the planetary gear between the web and the drive shaft.   
     
     
       5. The apparatus of claim 4, and further comprising: arresting means for arresting rotation of the drive shaft; and   coupling means for then coupling the shifting sleeve to the drive shaft for arresting rotation therewith.   whereby to change the phases of the plurality of control disks relative to the further control disk.   
     
     
       6. The apparatus of claim 3, and further comprising: arresting means for arresting rotation of the drive shaft; and   coupling means for then coupling the shifting sleeve to the drive shaft for arrested rotation therewith,   whereby to change the phases of the plurality of control disks relative to the further control disk.   
     
     
       7. The apparatus of claim 2, and further comprising: arresting means for arresting rotation of the drive shaft; and   coupling means for then coupling the shifting sleeve to the drive shaft for arrested rotation therewith,   whereby to change the phases of the plurality of control disks relative to the further control disk.